<figure class="image image-style-align-right">
  <img style="aspect-ratio:263/445;" src="Hidden Notes_image.png" width="263"
  height="445">
</figure>
<p>For easy extensibility, a lot of features in Trilium make use of actual
  notes to store information as opposed to having them stored in a separate
  location in the database. This allows some functions such as&nbsp;<a class="reference-link"
  href="#root/_help_zEY4DaJG4YT5">Attributes</a>,&nbsp;<a class="reference-link"
  href="#root/_help_Cq5X6iKQop6R">Relations</a>&nbsp;or even&nbsp;<a class="reference-link"
  href="#root/_help_eIg8jdvaoNNd">Search</a>&nbsp;and&nbsp;<a class="reference-link"
  href="#root/_help_QEAPj01N5f7w">Links</a>&nbsp;to be able to operate on
  them.</p>
<p>As the name suggests, these notes are hidden to the user by default to
  prevent cluttering the note tree and to prevent them from being accidentally
  deleted.</p>
<p>The hidden notes are stored in the user's&nbsp;<a class="reference-link"
  href="#root/_help_wX4HbRucYSDD">Database</a>&nbsp;just like normal notes,
  but they have a unique&nbsp;<a class="reference-link" href="#root/_help_m1lbrzyKDaRB">Note ID</a>&nbsp;which
  allows them to be distinguished from the normal ones.</p>
<h2>Accessing the hidden note tree</h2>
<p>From the&nbsp;<a class="reference-link" href="#root/_help_x3i7MxGccDuM">Global menu</a>,
  select <em>Advanced</em> → <em>Show Hidden Subtree</em>.</p>
<h2>Contents of the hidden note tree</h2>
<p>Here is a brief summary of all the notes within the hidden tree:</p>
<table
class="ck-table-resized">
  <colgroup>
    <col style="width:19.93%;">
      <col style="width:80.07%;">
  </colgroup>
  <thead>
    <tr>
      <th>Note</th>
      <th>Description</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td><a class="reference-link" href="#root/_hidden/_help__globalNoteMap">Note Map</a>
      </td>
      <td>
        <p>This note is actually opened when the&nbsp;<a class="reference-link" href="#root/_help_bdUJEHsAPYQR">Note Map</a>&nbsp;feature
          that is accessed from the&nbsp;<a class="reference-link" href="#root/_help_xYmIYSP6wE3F">Launch Bar</a>.</p>
        <p>It is possible to create any child notes in it without any additional
          meaning. For example, it can be used to store a list of note maps which
          can be linked to from other notes or <a href="#root/_help_u3YFHC9tQlpm">bookmarked</a>.</p>
      </td>
    </tr>
    <tr>
      <td><a class="reference-link" href="#root/_hidden/_help__sqlConsole">SQL Console History</a>
      </td>
      <td>
        <p>When SQL queries or commands are executed in the&nbsp;<a class="reference-link"
          href="#root/_help_YKWqdJhzi2VY">SQL Console</a>, they are stored here,
          grouped by month. Only the query is stored and not the results.</p>
        <p>This section can be accessed without going to the hidden tree by simply
          going to the&nbsp;<a class="reference-link" href="#root/_help_x3i7MxGccDuM">Global menu</a>&nbsp;and
          selecting Advanced → Open SQL Console History.</p>
        <p>Notes can be added as children of this tree, but it's generally not recommended
          to do so to not interfere with the normal history process.</p>
      </td>
    </tr>
    <tr>
      <td><a class="reference-link" href="#root/_hidden/_help__search">Search History</a>
      </td>
      <td>
        <p>Whenever a search is executed from the full&nbsp;<a class="reference-link"
          href="#root/_help_eIg8jdvaoNNd">Search</a>, the query will be stored here,
          grouped by month. Only the search parameters are stored and not the results
          themselves.</p>
        <p>This section can be accessed without going to the hidden tree by simply
          going to the&nbsp;<a class="reference-link" href="#root/_help_x3i7MxGccDuM">Global menu</a>&nbsp;and
          selecting Advanced → Open Search History.</p>
        <p>Notes can be added as children of this tree, but it's generally not recommended
          to do so to not interfere with the normal history process.</p>
      </td>
    </tr>
    <tr>
      <td><a class="reference-link" href="#root/_hidden/_help__bulkAction">Bulk Action</a>
      </td>
      <td>
        <p>This section is used for&nbsp;<a class="reference-link" href="#root/_help_ivYnonVFBxbQ">Bulk Actions</a>.
          The last configuration for bulk actions will be stored as part of this
          note, each action in its own <code>action</code> label.</p>
        <p>Notes can be added as children of this tree, but there won't be any benefit
          in doing so.</p>
      </td>
    </tr>
    <tr>
      <td><a class="reference-link" href="#root/_hidden/_help__backendLog">Backend Log</a>
      </td>
      <td>
        <p>This note corresponds to the backend log feature (see&nbsp;<a class="reference-link"
          href="#root/_help_qzNzp9LYQyPT">Error logs</a>).</p>
        <p>This item can be accessed without going to the hidden try by going to
          the&nbsp;<a class="reference-link" href="#root/_help_x3i7MxGccDuM">Global menu</a>&nbsp;and
          selecting Advanced → Show backend log.</p>
      </td>
    </tr>
    <tr>
      <td><a class="reference-link" href="#root/_hidden/_help__userHidden">User Hidden</a>
      </td>
      <td>This section can be used by <a href="#root/_help_CdNpE2pqjmI6">scripts</a> to
        create their own notes that should not be directly visible to the user.
        The note can be identified by scripts by its unique ID: <code>_userHidden</code>
      </td>
    </tr>
    <tr>
      <td><a class="reference-link" href="#root/_hidden/_help__lbTplRoot">Launch Bar Templates</a>
      </td>
      <td>
        <p>This section contains the templates for the creation of launchers in the&nbsp;
          <a
          class="reference-link" href="#root/_help_xYmIYSP6wE3F">Launch Bar</a>. It is not possible to create child notes here.</p>
        <p>Theoretically some of the notes here can be customized, but there's not
          much benefit to be had in doing so.</p>
      </td>
    </tr>
    <tr>
      <td><a class="reference-link" href="#root/_hidden/_help__share">Shared Notes</a>
      </td>
      <td>
        <p>This tree lists all of the notes that are <a href="#root/_help_R9pX4DGra2Vt">shared</a> publicly.
          It can be useful to track down which notes are shared regardless of their
          position in the note tree.</p>
        <p>This section can be accessed without going to the hidden tree simply by
          going to the&nbsp;<a class="reference-link" href="#root/_help_x3i7MxGccDuM">Global menu</a>&nbsp;and
          selecting <em>Show Shared Notes Subtree</em>.</p>
        <p>Sub-notes cannot be created here.</p>
      </td>
    </tr>
    <tr>
      <td><a class="reference-link" href="#root/_hidden/_help__lbRoot">Launch Bar</a>
      </td>
      <td>
        <p>The tree contains both available and displayed items of the&nbsp;<a class="reference-link"
          href="#root/_help_xYmIYSP6wE3F">Launch Bar</a>.</p>
        <p>This section can be accessed without going to the hidden tree by:</p>
        <ul>
          <li>Going to the&nbsp;<a class="reference-link" href="#root/_help_x3i7MxGccDuM">Global menu</a>&nbsp;and
            selecting <em>Configure Launchbar</em>.</li>
          <li>Right-clicking an empty space on the&nbsp;<a class="reference-link" href="#root/_help_xYmIYSP6wE3F">Launch Bar</a>&nbsp;and
            selecting <em>Configure Launchbar</em>.</li>
        </ul>
        <p>Sub-notes cannot be created here.</p>
      </td>
    </tr>
    <tr>
      <td><a class="reference-link" href="#root/_hidden/_help__options">Options</a>
      </td>
      <td>
        <p>This section stores the list of&nbsp;<a class="reference-link" href="#root/_help_4TIF1oA4VQRO">Options</a>.</p>
        <p>This section can be accessed without going to the hidden tree by:</p>
        <ul>
          <li>Going to the&nbsp;<a class="reference-link" href="#root/_help_x3i7MxGccDuM">Global menu</a>&nbsp;and
            selecting <em>Options</em>.</li>
          <li>Pressing the dedicated Options icon in the&nbsp;<a class="reference-link"
            href="#root/_help_xYmIYSP6wE3F">Launch Bar</a>.</li>
        </ul>
      </td>
    </tr>
    <tr>
      <td><a class="reference-link" href="#root/_hidden/_help__lbMobileRoot">Mobile Launch Bar</a>
      </td>
      <td>
        <p>This is very similar to the <em>Launch Bar</em>, but is dedicated for the
          mobile UI only.</p>
        <p>Accessing it outside the <em>Launch Bar</em> is the same as the Launch Bar,
          but needs to be done so from the mobile interface.</p>
      </td>
    </tr>
    <tr>
      <td><a class="reference-link" href="#root/_hidden/_help__help">User Guide</a>
      </td>
      <td>This is where the note structure for the User Guide is actually stored.
        Only the metadata is stored, as the help itself is present as actual files
        in the application directory.</td>
    </tr>
  </tbody>
  </table>